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Cornerstone · Grades 3–5 Keystones #1 7 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄7

    Answer: 43⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 18 = 10

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 2:1:3

    Answer: 22, 11 and 33
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 3, 13, 7

    Answer: 11

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